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Published byAmi Carroll Modified over 9 years ago
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RENAL SCINTIGRAPHY Prepared and Presented by Paul Jolles, MD
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Kidney Stone Anatomy Kidneys to Urinary Bladder ureterolithiasis
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INDICATIONS DIFFERENTIAL FUNCTION GFR, ERPF OBSTRUCTION POST OPERATIVE EVALUATION NEED FOR FREQUENT FOLLOW-UP AZOTEMIA CONTRAST ALLERGY
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HISTORICAL BACKGROUND CONTRAST UROGRAPHY FIRST CLINICALLY USEFUL UROGRAM 1929: DR. MOSES SWICK (U.S.)
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IVP Phase I Initial injection Dynamic
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IVP Phase II Cortical Transit
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IVP Phase III Excretory
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IVP Phase III Excretory
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IVP Phase III Excretory
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HISTORCAL BACKGROUND 1945: I-131 PRODUCTION (U.S.) 1947: COLTMAN AND MARSHALL (U.S.) KOLLMAN (GERMANY) SCINTLLATION COUNTER (PMT)
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HISTORICAL BACKGROUND 1952: OESSER, BILLION (GER) COLLECTED URINE 1955: TAPLIN, WINTER (U.S.) FIRST RENOGRAM 1957: ANGER CAMERA (U.S.)
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Renal Agents Contrast PAH HIPP Others
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RADIOPHARMACEUTICALS TUBULAR SECRETION GLOMERULAR FILTRATION CORTICAL BINDING MIXED
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TUBULAR SECRETION EFFECTIVE RENAL PLASMA FLOW I-131 ORTHIODOHIPPURATE Tc-99m MERCAPTOACEYTL- TRIGLYCINE (MAG3)
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I-131 HIPPURAN 20% FILTERED 80% SECRETED DOSE: 300 uCi
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Tc-99m MAG3 TUBULAR SECRETION 90% FILTRATION 10% DOSE: 5-10 mCi
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Tc-99m MAG3 IMAGING FLOW (ARTERIAL) UPTAKE (NEPHROGRAM) EXCRETION (“CORTICAL TRANSIT”)
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GLOMERULAR FILTRATION GLOMERULAR FILTRATION RATE Tc-99m DIETHYLENETRIAMINE PENTAACETIC ACID (DTPA) IODINATED CONTRAST Gd-DTPA
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Tc-99m DTPA GLOMERULAR FILTRATION METAL CHELATOR 20% EXTRACTION FRACTION DOSE: 5-20 mCi
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Tc-99m DTPA IMAGING FLOW (ARTERIAL) UPTAKE (NEPHROGRAM) EXCRETION (“CORTICAL TRANSIT”)
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RENOVASCULAR HYPERTENSION ABRUPT ONSET HTN 55 YRS SEVERE/MALIGNANT HTN REFRACTORY HTN
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RENOVASCULAR HYPERTENSION EPIGASTRIC BRUIT MOD HTN WITH VASCULAR DZ ACE INHIBITOR-INDUCED RF
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RENOVASCULAR HYPERTENSION <1% HYPERTENSIVE PATIENTS ATHEROSCLEROSIS FIBROMUSCULAR DYSPLASIA RAS NOT NECESSARILY RVH
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CAPTOPRIL RENOGRAPHY MEDICATION HISTORY DISCONTINUE ACE INHIBITORS SERUM CHEMISTRY (BUN/Cr)
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CAPTOPRIL RENOGRAPHY ORAL AND IV HYDRATION BP MONITORING 25 MG CAPTOPRIL ORALLY 10 mCi MAG 3 AND LASIX
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CAPTOPRIL RENOGRAPHY PHYSIOLOGY OF RVH DIMINISHED RBF RENIN-ANGIOTENSIN EFFERENT ARTERIOLE
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CAPTOPRIL RENOGRAPHY PROLONGED TIME TO PEAK CORTICAL RETENTION >30% BASELINE STUDY
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LASIX RENOGRAPHY EVALUATION FOR OBSTRUCTION LASIX WASHOUT HALF TIME
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LASIX WASHOUT T1/2 TIME FOR CLEARANCE OF ½ ACTIVITY FROM THE KIDNEY AFTER LASIX
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LASIX WASHOUT T1/2 NORMAL: <10-15 MIN OBSTRUCTED: >20 MIN
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DILATED, NON-OBSTRUCTED PROGRESSIVE PELVOCALEAL TRACER ACCUMULATION PROMPT LASIX WASHOUT
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DILATED, OBSTRUCTED PROGRESSIVE PELVOCALYCEAL TRACER ACCUMULATION IMPAIRED LASIX WASHOUT
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IMPAIRED FUNCTION
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RENAL FAILURE S/P AAA REPAIR Tc-99m MAG3 FLOW UPTAKE CORTICAL TRANSIT EXCRETORY PHASE
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CORTICAL BINDING Tc-99m DIMERCAPTOSUCCINIC ACID (DMSA)
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Tc-99m DMSA METAL CHELATOR 50% CORTICAL BINDING VIA SULFHYDRYL LINK (MAINLY PCT) 6% EXTRACTION FRACTION DOSE: 2-5 mCi
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Tc-99m DMSA PYELONEPHRITIS RENAL MASS
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MIXED Tc-99m GLUCOHEPTONATE
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12% CORTICAL BINDING (PCT) GLOMERULAR FILTRATION TUBULAR SECRETION DOSE: 10 mCi
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GALLIUM SCINTIGRAPHY INTERSTITIAL NEPHRITIS ACUTE RENAL FAILURE ACUTE TUBULAR NECROSIS AMYLOIDOSIS VASCULITIS CHEMOTHERAPY
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GALLIUM SCINTIGRAPHY BILATERAL MALIGNANCY LEUKEMIA, LYMPHOMA BILATERAL OBSTRUCTION NEPHROTIC SYNDROME PYELONEPHRITIS TUBERCULOSIS WEGENER’S GRANULOMATOSIS
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